Historical Rules · 15 February 2021
Rule 408.3
Official source text from the 15 February 2021 Rules release
In the Planechase, Vanguard, Commander, Archenemy, and Conspiracy Draft casual variants, nontraditional Magic cards and/or specially designated cards start the game in the command zone. Each variant has its own rules regarding such cards. See section 9, “Casual Variants.”